133869111660 has 72 divisors (see below), whose sum is σ = 406554089760. Its totient is φ = 35655840768.

The previous prime is 133869111647. The next prime is 133869111667. The reversal of 133869111660 is 66111968331.

133869111660 is a `hidden beast` number, since 13 + 386 + 91 + 116 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (133869111667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292197 + ... + 594236.

It is an arithmetic number, because the mean of its divisors is an integer number (5646584580).

Almost surely, 2^133869111660 is an apocalyptic number.

133869111660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133869111660 is an abundant number, since it is smaller than the sum of its proper divisors (272684978100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133869111660 is a wasteful number, since it uses less digits than its factorization.

133869111660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887287 (or 887282 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 133869111660 in words is "one hundred thirty-three billion, eight hundred sixty-nine million, one hundred eleven thousand, six hundred sixty".